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A tabletop x-ray tomography instrument for nanometer-scale imaging: demonstration of the 1,000-element transition-edge sensor subarray
Paul Szypryt, Nathan Nakamura, Daniel T. Becker +28
We report on the 1,000-element transition-edge sensor (TES) x-ray spectrometer implementation of the TOMographic Circuit Analysis Tool (TOMCAT). TOMCAT combines a high spatial reso…
Design of a 3000-pixel transition-edge sensor x-ray spectrometer for microcircuit tomography
Paul Szypryt, Douglas A. Bennett, William J. Boone +28
Feature sizes in integrated circuits have decreased substantially over time, and it has become increasingly difficult to three-dimensionally image these complex circuits after fabr…
Nanoscale Three-Dimensional Imaging of Integrated Circuits using a Scanning Electron Microscope and Transition-Edge Sensor Spectrometer
Nathan Nakamura, Paul Szypryt, Amber L. Dagel +30
X-ray nanotomography is a powerful tool for the characterization of nanoscale materials and structures, but is difficult to implement due to competing requirements on X-ray flux an…
A 50 mK test bench for demonstration of the readout chain of Athena/X-IFU
Florent Castellani, Sophie Beaumont, François Pajot +22
The X-IFU (X-ray Integral Field Unit) onboard the large ESA mission Athena (Advanced Telescope for High ENergy Astrophysics), planned to be launched in the mid 2030s, will be a cry…
CCAT-prime: The 850 GHz camera for Prime-Cam on FYST
Scott C. Chapman, Anthony I. Huber, Adrian K. Sinclair +23
The Fred Young Submillimeter Telescope (FYST) at the Cerro-Chajnantor Atacama Telescope prime (CCAT- prime) Facility will host Prime-Cam as a powerful, first generation camera with…
SLAC Microresonator RF (SMuRF) Electronics: A tone-tracking readout system for superconducting microwave resonator arrays
Cyndia Yu, Zeeshan Ahmed, Josef C. Frisch +22
We describe the newest generation of the SLAC Microresonator RF (SMuRF) electronics, a warm digital control and readout system for microwave-frequency resonator-based cryogenic det…
The potential of microcalorimeter x-ray spectrometers for measurement of relative fluorescence-line intensities
J. W. Fowler, L. Miaja-Avila, G. C. O'Neil +3
We have previously used an array of cryogenic microcalorimeters with 4 eV energy resolution to measure emission-line profiles and energies of the characteristic L-shell x rays of f…
CCAT-prime: Design of the Mod-Cam receiver and 280 GHz MKID instrument module
Eve M. Vavagiakis, Cody J. Duell, Jason Austermann +33
Mod-Cam is a first light and commissioning instrument for the CCAT-prime project's six-meter aperture Fred Young Submillimeter Telescope (FYST), currently under construction at 560…
The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
Didier Barret, Vincent Albouys, Jan-Willem den Herder +296
The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile ob…
Absolute Energy Measurements with Superconducting Transition-Edge Sensors for Muonic X-ray Spectroscopy at 44 keV
Daikang Yan, Joel C. Weber, Tejas Guruswamy +25
Superconducting transition-edge sensor (TES) microcalorimeters have great utility in x-ray applications owing to their high energy resolution, good collecting efficiency and the fe…
Bandwidth and Aliasing in the Microwave SQUID Multiplexer
Cyndia Yu, Zeeshan Ahmed, Jake A. Connors +13
The microwave SQUID multiplexer (umux) has enabled higher bandwidth or higher channel counts across a wide range of experiments in particle physics, astronomy, and spectroscopy. Th…
The 511-CAM Mission: A Pointed 511 keV Gamma-Ray Telescope with a Focal Plane Detector Made of Stacked Transition Edge Sensor Microcalorimeter Arrays
Farzane Shirazi, Md. Arman Hossen, Daniel Becker +18
The 511 keV gamma-ray emission from the galactic center region may fully or partially originate from the annihilation of positrons from dark matter particles with electrons from th…
Energy calibration of nonlinear microcalorimeters with uncertainty estimates from Gaussian process regression
J. W. Fowler, B. K. Alpert, G. C. O'Neil +2
The nonlinear energy response of cryogenic microcalorimeters is usually corrected through an empirical calibration. X-ray or gamma-ray emission lines of known shape and energy anch…
Measuring the electron neutrino mass using the electron capture decay of 163Ho
Joel Ullom, Daniel Schmidt, Simon Bandler +14
While the mass differences between neutrino mass states are known, their absolute masses and mass hierarchy have not yet been determined. Determining the mass of neutrinos provides…
Quantification of 242Pu with a Microcalorimeter Gamma Spectrometer
David J. Mercer, Ryan Winkler, Katrina E. Koehler +18
We report measurements of the 103-keV and 159-keV gamma ray signatures of 242Pu using microcalorimetry. This is the first observation of these gamma rays in a non-destructive measu…